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Finding the Fourth Proportional to 228,539.98, 315,386.06 and 126,563.21

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Solution

The fourth proportional to 228,539.98, 315,386.06 and 126,563.21 is: 174,657.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,539.98 : 315,386.06 = 126,563.21 : x
  2. Step 2: Convert to fraction form
    228,539.98/315,386.06 = 126,563.21/x
  3. Step 3: Cross multiply
    228,539.98x = 315,386.06 × 126,563.21
  4. Step 4: Simplify right side
    228,539.98x = 39,916,271,115.80
  5. Step 5: Solve for x
    x = 39,916,271,115.80/228,539.98
  6. Step 6: Final answer
    x = 174,657.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.